Superiority of metastatic lymph node ratio to the 7th edition UICC N staging in gastric cancer

Table 2 Multivariate survival analysis results

Variables	Wald	P value	HR	95% CI
Age (continuous)	23.741	< 0.001	1.020	1.012-1.028
Tumor location	8.825	0.003	0.794	0.682-0.925
Tumor size (continuous)	29.678	< 0.001	1.085	1.054-1.118
Histological grade	11.542	0.001	1.222	1.089-1.372
Lymphatic/venous invasion	30.629	< 0.001	2.063	1.596-2.666
UICC 7th T	43.652	< 0.001	1.434	1.289-1.596
UICC 7th N	5.806	0.016	1.218	1.037-1.430
MLNR	14.693	< 0.001	1.330	1.149-1.538
Retrieved lymph nodes	29.666	< 0.001	0.548	0.441-0.680

CI: Confidence interval; UICC: International Union Against Cancer; HR: Hazard ratio; T: Tumor; N: Node; MLNR: Metastatic lymph node ratio.